(x+2)(x+1)=(x-2)(x-1)

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Solution for (x+2)(x+1)=(x-2)(x-1) equation: 


Simplifying
(x + 2)(x + 1) = (x + -2)(x + -1)

Reorder the terms:
(2 + x)(x + 1) = (x + -2)(x + -1)

Reorder the terms:
(2 + x)(1 + x) = (x + -2)(x + -1)

Multiply (2 + x) * (1 + x)
(2(1 + x) + x(1 + x)) = (x + -2)(x + -1)
((1 * 2 + x * 2) + x(1 + x)) = (x + -2)(x + -1)
((2 + 2x) + x(1 + x)) = (x + -2)(x + -1)
(2 + 2x + (1 * x + x * x)) = (x + -2)(x + -1)
(2 + 2x + (1x + x2)) = (x + -2)(x + -1)

Combine like terms: 2x + 1x = 3x
(2 + 3x + x2) = (x + -2)(x + -1)

Reorder the terms:
2 + 3x + x2 = (-2 + x)(x + -1)

Reorder the terms:
2 + 3x + x2 = (-2 + x)(-1 + x)

Multiply (-2 + x) * (-1 + x)
2 + 3x + x2 = (-2(-1 + x) + x(-1 + x))
2 + 3x + x2 = ((-1 * -2 + x * -2) + x(-1 + x))
2 + 3x + x2 = ((2 + -2x) + x(-1 + x))
2 + 3x + x2 = (2 + -2x + (-1 * x + x * x))
2 + 3x + x2 = (2 + -2x + (-1x + x2))

Combine like terms: -2x + -1x = -3x
2 + 3x + x2 = (2 + -3x + x2)

Add '-2' to each side of the equation.
2 + 3x + -2 + x2 = 2 + -3x + -2 + x2

Reorder the terms:
2 + -2 + 3x + x2 = 2 + -3x + -2 + x2

Combine like terms: 2 + -2 = 0
0 + 3x + x2 = 2 + -3x + -2 + x2
3x + x2 = 2 + -3x + -2 + x2

Reorder the terms:
3x + x2 = 2 + -2 + -3x + x2

Combine like terms: 2 + -2 = 0
3x + x2 = 0 + -3x + x2
3x + x2 = -3x + x2

Add '-1x2' to each side of the equation.
3x + x2 + -1x2 = -3x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
3x + 0 = -3x + x2 + -1x2
3x = -3x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
3x = -3x + 0
3x = -3x

Solving
3x = -3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3x' to each side of the equation.
3x + 3x = -3x + 3x

Combine like terms: 3x + 3x = 6x
6x = -3x + 3x

Combine like terms: -3x + 3x = 0
6x = 0

Divide each side by '6'.
x = 0

Simplifying
x = 0

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